Furnace



May 31, 1932. c. E. BUYSSE FURNACE Filed Aug. 19, 1930 mvmrok. Ola/P1, 8J5. Bursar.

. hid/l ATTORNEY.

Patented May 31, 1 932 UNITED STATES PATENT OFFICE GHABLES E. BUYSSE, OF DETROI'1 MICHIGAN FURNACE Application filed August 1 9, 1980. Serial No. 476,348.

My invention relates to furnaces and an object of my improvements is to provide an apparatus of improved structure and operation in which the articles to be heated are thor- I oughl ture t roughout its volume, regulated. I attain this object in the apparatus illustrated in the accompanying drawings in 'which:

Figure 1 is an elevation partly in section of an apparatus embodying my invention.

Figure 2 is a detail section on the line II, II, Figure 1. I

2, 2 is the casing having a passage 3 with a'valved loading aperture 6 at one end and a valved delivery opening 7, at the other end. 4 is the carrier belt passing through the passage 3 which may be actuated by suitable machiner 5.

9 is a an operated by a motor 9a. 11 is a combustion chamber having delivery apertures 11a through its wall and burners 12 in said chamber.

8 is a conduit leading from the loading end 6, of the passage 3 to the intake to the fan 9 and having a controlling valve 8:: therein. 10 is a conduit leading from the deliveryport of the fan 9 upward and forward and then passing downward adjacent to-the wall of the combustion chamber 11 and opening at 106 to the passage 3, about three quarters of the way toward the delivery end of said passage. he conduit 10 is contracted at 10c adjacent to the delivery passage 11a of the combustion chamber 11, and is provided 100 communicating with the delivery passage 11a. 13 are pieces of metal bent into the inverted U-form, shown in Figure 2, andextending across the throat or contracted part 10a of the passage 10. These are welded at their edges to the sides of the conduit 10 and form partitions between which, and between which and the sidesof the conduit, passages for gas are left, as shown in Figure 2. 7

14 is a conduit opening to the passage 3 at the delivery endthereof passing upward and above the combustion chamber 11 and communicating withthe conduit 8 adjacent and that is easily subjected to gas of uniform tempera with openings to the intake to the fan 9. 14a is the passage 14.

he passage 3 is provided along its lower wall with inverted-V-shaped partitions 3?) extending laterally across the same and up wardly to a little less than half way to the upper wall. The peak of one of these partitionscomes below the center of the delivery opening 105 from the conduit 10. The upper wall of the passage 3 is cated inverted-V-shaped depressions between the salient partitions 3a 'hich alternate with the entirely similar partitions 3b of the lower wall of said passage. By this construction of the passage 3, the to pass alternately downward through the carrier 4 and upward through the same, so that articles on said carrier shall be thoroughly subjected to the hot gas.

a valve in provided with truno gases are constrained as The operation of the above described ap- 7g paratus is as. follows:

The fan 9 being set in motion and the burners 12 being in operation, gas is drawn from the loading end of the passage 3 into the fan 9 and forced out through the passage 40 and the contracted portion 10a thereof, thus drawing the hot gas from the combustion chamber 11 through the delivery apertures 11a and the receiving apertures 100 of said conduit. The hot gas from the combusso tion chamber 11 is, by the action of the jets, adjacent to the portion 10a of the passage 10, thoroughly mingled with the gas passing through said conduit, and is forced into the passage 3 and past the articles approaching from the loading end 6 to which articles the gas gives up its heat to a considerable extent and is then taken through the conduit 8 to the fan 9 and again passed through the passage 10. A portion of the gas discharged from the conduit 10 at 106 may pass toward the delivery end of the passage 3 and may be drawn through the conduit 14 back to the intake to the fan 9, The amount of gas passing through the conduits 8 and 1.4 may be regulated by the valves 8a and 14a.

In the above described apparatus it is found that the temperature of the gas is uniform throughout its volume and that the at a point adjacent to the a named conduit points, means for raising the tem the combination of a casm the temperature of the gas may be easily and accurately a v The ateral openings 10c come eeverallyldire'ctly below the partitions 13 at a int w ere the age for the gases is ,e urged, and directly at the side of the jets of gas passing] between said partitions. I

What I claim is e- V 1. In an apparatus of the kind described, the combinatlon of a casing-having: passage therein having'a loading and a de very end, a conduit communicatin with said oading end ereof and at a point part way to the delivery end of said passage, a fan 1n said conduit adapted to draw gas from the first mentioned point and deliver the same to the other of said rature of the gas passing through said con uit, and a second conduit communicating with said at; sage between the delivery end of the and the delivery end of said passage and with the intake of said fan the combination of a combustion chambdr, a

lurality of spaced par conduit for gas, a p titlons, 13, in said conduit, and a passage from said combustion chamber commun1- sm les E. nurses.

2. In an apparatus of the kind described, v

the-combination of a combustion chamber, a conduit for gas, a plurality of spaced partitions 13 in said conduit, and passages from said combustion chamber communicating se orally with said conduit at points ad scent to said partitions on the side thereo toward which said gas is moving, and in line with said artitions.

3. an a paratus of the kind described, the combination of a casing having a pass? therein having a loading and a de ivery en a conduit communicatin with said usage at a point adj ac'ent to the oading end t ereof and at a point part way to the delivery end of said passage, a fan in said conduit adapted to draw gas from the firstxmentioned point and deliver. the ,same to the other oi said means for raising thetemperature o! throughlsaid conduit, and a second conduit communicating with said passage between the named conduit and the delivery end of said passage and with the intake of said fan, and a valve in one of said conduits.

4. In an apparatns oi thexkind described,

7 a pa, z 1 therein having a load 3 and a de 'vcry en a conduit communieat 'with said pa at a point adj aeent to the and at a point partway of p 2': todraw gas from the and deliver the same to to the delivery en the other of said ints, means for raising the temgerature of the gas pass! thro said con nit, and a second conduit communicating with said 5:11; sage between the delivery V nani conduit and the delivery end of said pamage and with the intake or said fan, and a regulating valve in eachoi said conduits.

' dmgendthereof 6 a fan 111 said conduitadapted first mentio e point delivery end of the first nay a. In an apparatus of the ln'nd described,

reduced 

